Accession Number : ADP008734

Title :   Principal Component Analysis: Basic Methods and Extensions,

Corporate Author : HAWAII UNIV HONOLULU DEPT OF OCEANOGRAPHY

Personal Author(s) : Mitchum, Gary T.

Report Date : NOV 1993

Pagination or Media Count : 15

Abstract : The basic method of principal component analysis is relatively well understood by physical oceanographers. Some less generally understood ideas involve significance testing and rotation of the basis functions. Also, a number of other analysis techniques related to principal component analysis can be more easily understood by using it as a starting point. Such techniques include factor analysis, extended empirical orthogonal function analysis, canonical correlation analysis, and complex empirical orthogonal function analysis, for example. The basis calculations comprising principal component analysis are presented, and significance testing and rotation are discussed. Pacific sea level data are used to illustrate these techniques. The paper concludes with a discussion of various extensions to the basic technique and an evaluation of the usefulness of the extensions.

Descriptors :   *FACTOR ANALYSIS, *OCEANOGRAPHY, *LINEAR REGRESSION ANALYSIS, SEA LEVEL, PACIFIC OCEAN, COMPARISON, DATA PROCESSING.

Subject Categories : Statistics and Probability
      Physical and Dynamic Oceanography

Distribution Statement : APPROVED FOR PUBLIC RELEASE